GOODWILL AND RADIO BROADCASTING LICENSES - Changes in the Company's Broadcasting Licenses Carrying Value (Details) - 6 months ended Jun. 30, 2024 $ in Thousands	USD ($) item	market
Goodwill [Line Items]
Number of most populous market	13	13
Number of radio markets with impairment | market		9
Radio Broadcasting | Licensing Agreements
Valuation Allowance for Impairment of Recognized Servicing Assets [Roll Forward]
Balance as of January 1, 2024	$ 375,296
Impairment charges	(80,758)
Balance as of June 30, 2024	$ 294,538